<template>
  <div>
    <div id="root">
      <div class="todo-container">
        <div class="todo-wrap">
          <listHeader ref="listHeader" :receive="receive"></listHeader>
          <listTodo
            :todos="todos"
            :delBtn="delBtn"
            :changeDone="changeDone"
          ></listTodo>
          <listFooter
            :DelAllMask="DelAllMask"
            :todos="todos"
            :AllMask="AllMask"
          ></listFooter>
        </div>
      </div>
    </div>
  </div>
</template>

<script>
import listHeader from "./components/header.vue";
import listTodo from "./components/list.vue";
import listFooter from "./components/footer.vue";
export default {
  name: "App",
  data() {
    return {
      todos: JSON.parse(localStorage.getItem("todos")) || [],
      allMask: true,
    };
  },
  methods: {
    // 添加一个数据
    receive(x) {
      this.todos.unshift(x);
    },
    // 改变数据的done状态
    changeDone(id) {
      this.todos.forEach((todoObj) => {
        if (todoObj.id == id) {
          todoObj.done = !todoObj.done;
          // console.log(todoObj);
        }
      });
    },
    // 删除按钮-删除某一个item
    delBtn(id) {
      this.todos = this.todos.filter((todo) => todo.id !== id);
    },
    AllMask() {
      if (this.allMask) {
        this.todos.forEach((todoObj) => {
          todoObj.done = true;
        });
        this.allMask = false;
      } else {
        this.todos.forEach((todoObj) => {
          todoObj.done = false;
        });
        this.allMask = true;
      }
    },
    DelAllMask() {
      this.todos = this.todos.filter((todoObj) => {
        todoObj.done = true;
      });
    },
  },
  components: {
    listHeader,
    listFooter,
    listTodo,
  },
  watch: {
    immediate: true,
    todos: {
      deep: true,
      handler(value) {
        localStorage.setItem("todos", JSON.stringify(value));
      },
    },
  },
};
</script>

<style>
/*base*/
body {
  background: #fff;
}
.btn {
  display: inline-block;
  padding: 4px 12px;
  margin-bottom: 0;
  font-size: 14px;
  line-height: 20px;
  text-align: center;
  vertical-align: middle;
  cursor: pointer;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.2),
    0 1px 2px rgba(0, 0, 0, 0.05);
  border-radius: 4px;
}
.btn-danger {
  color: #fff;
  background-color: #da4f49;
  border: 1px solid #bd362f;
}
.btn-danger:hover {
  color: #fff;
  background-color: #bd362f;
}
.btn:focus {
  outline: none;
}
.todo-container {
  width: 600px;
  margin: 0 auto;
}
.todo-container .todo-wrap {
  padding: 10px;
  border: 1px solid #ddd;
  border-radius: 5px;
}
</style>
